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Finding the Third Proportional to 86,464 and 158,720

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Solution

The third proportional to 86,464 and 158,720 is: 291,358.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,464 : 158,720 = 158,720 : x
  2. Step 2: Convert to fraction form
    86,464/158,720 = 158,720/x
  3. Step 3: Cross multiply
    86,464x = 158,720 × 158,720
  4. Step 4: Simplify right side
    86,464x = 25,192,038,400
  5. Step 5: Solve for x
    x = 25,192,038,400/86,464
  6. Step 6: Final answer
    x = 291,358.70

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Why These Related Problems?

These problems maintain the same ratio (1.84) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.